Home / 143,767,520.20-215,431,840.14-85,360,182.31

Finding the Fourth Proportional to 143,767,520.20, 215,431,840.14 and 85,360,182.31

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Solution

The fourth proportional to 143,767,520.20, 215,431,840.14 and 85,360,182.31 is: 127,909,983.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,767,520.20 : 215,431,840.14 = 85,360,182.31 : x
  2. Step 2: Convert to fraction form
    143,767,520.20/215,431,840.14 = 85,360,182.31/x
  3. Step 3: Cross multiply
    143,767,520.20x = 215,431,840.14 × 85,360,182.31
  4. Step 4: Simplify right side
    143,767,520.20x = 18,389,301,149,729,176
  5. Step 5: Solve for x
    x = 18,389,301,149,729,176/143,767,520.20
  6. Step 6: Final answer
    x = 127,909,983.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.